3 ms·
Dell XPS 9360/9550/9560 and Precision M5510/M5520 Thunderbolt 3 design flaw
- miles 10y agoGreat comment[0] by nando4 yesterday summarizes the issue nicely: I entirely understand your discontent. The XPS 13/15 was aimed as a Macbook killer. Indeed 2015 Macbooks ran 16Gbps-TB2 whereas these XPS systems outwardly surpassed them as 32Gbs-TB3. Unbeknown by their owners, until TB3 PCIe peripherals were released, they actually ran 16Gbps-TB3 via a neutered x2 3.0 link from the TB controller to the root bridge. Yes, Dell did cheap out, using 2014 DSL5110 controllers rather than the newer DSL6xxx ones. There would have been a tiny increase in TDP running 4 lanes rather than 2, however, it shows a bias towards DP rather than PCIe traffic down the 40Gbps TB3 channel. I wish it wasn't so. Finding an argument against Dell in that mix will be difficult. Intel are more at fault outwardly advertising TB3 as 4 lanes of PCIe 3.0, then in the details saying it can be between 2-4 lanes of PCIe 3.0. Good luck if pursuing Intel. [0] https://egpu.io/forums/pc-setup/xps-15-9550-not-able-to-reach-40gbps-over-tb3/paged/4/#post-1083 https://egpu.io/forums/pc-setup/xps-15-9550-not-able-to-reac...